Differences

This shows you the differences between two versions of the page.

--- cs_lang:c [2011/07/12 10:37] – [Hello World] cedric
+++ cs_lang:c [2011/07/12 10:47] – [Read a file] cedric
@@ Line 35: / Line 35: @@
 ===== Read a file =====
 <code c>
-#include <iostream.h>
+#include <stdio.h>   /* required for file operations */
-#include <fstream.h>
+FILE *fr;            /* declare the file pointer */
+main()
-int main ()
 {
-        //  Open the file
+   char line[80];
-        ofstream inputFile ("./file.txt", ios::in);
-        // Test
+   fr = fopen ("./file.txt", "rt");  /* open the file for reading */
-        if (!inputFile)
+   /* "rt" means open the file for reading text */
-        {
-                cerr << "Error" << endl;
+   while(fgets(line, 1024, fr) != NULL)
-                exit (1);
+   {
-        }
+         printf ("%s\n", line);
-        char buf [1024];
+   }
-        //  Until there are no more lines in the file,
+   fclose(fr);  /* close the file prior to exiting the routine */
-        //  read and display it.
-        while (!inputFile.eof())
-        {
-                inputFile.getline (buf,1024);;
-                cout << buf << endl;;
-        }
-        // Close the file
-        inputFile.close ();;
 }
 </code>